Not prevent spoilage. Foods such as yogurt contain

Not being able to be seen without the aid of a
microscope, microscopic, single-celled organisms pave the foundation for the
operations of life on Earth. Microbes have the ability to greatly or minimally impact
humankind and one’s everyday life on Earth. From how well a loaf of bread will rise
to the spread of contagious disease, microbes, as small as they are, have
affected demographics, entire populations, and have sparked the onset of viral

The Bubonic Plague was caused by bacteria known as
Yersinia pestis. These bacteria lived amongst the bodies of rodents and were spread
by rat or flea bites. This microbe holds the responsibility for killing over 25
million in Western Europe in the late 1340’s. Sprouting in the 19th
century, a highly infectious disease, caused by the bacteria Mycobacterium tuberculosis, can easily
spread through the air by way of a cough or a sneeze coming from a person
infected with Tuberculosis. Because of the intensity of the contagiousness, it
is advised to not stay in a stuffy room with somebody infected with TB for a
long period of time. Even still today, microbes have found their way into the
21st century with a virus commonly referred to as HIV, or the human
immunodeficiency virus. This virus is the reason for AIDS, a worldwide pandemic
affecting nearly 36.7 million people in the year of 2016. Transmission through
bodily fluids—blood, semen, vaginal fluid, and breast milk can transfer this immune-system-weakening
virus to the body of another. In developing countries, such a disease wreaking
the amount of havoc that it does, exponentially impacts and stifles any room
for economic development.

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Despite their pertinent roles in the mass-extinction
of entire demographics, microbes have proven to be key components in food production.
Some dairy products are most known for their processes of fermentation, which
require microorganisms to produce flavor and prevent spoilage. Foods such as
yogurt contain bacteria like Streptococcus
thermophilus and Lactobacillus
bulgaricus which aid in its overall production. Yeast, single-celled organisms
belonging to the fungi species, harness the capability of breaking down sugars
which can be used in making bread and other alcoholic beverages.